>>673
userContent.css

/* uBlock Origin Popup Panel */
@-moz-document url("chrome://ublock0/content/popup.html"),
regexp("^moz-extension://[0-9a-f-]+/popup\\.html$") {
/* パネルの左ペインをドメイン名の長さに合せて広げる。 */
#uBO-popup-panel .advancedUser #panes > .tooltipContainer:nth-of-type(2) {
overflow-x: visible !important;
/* overflow-y: auto !important; */
overflow-y: scroll !important;
width: auto !important;
min-width: 24em !important;
max-width: 600px !important;
}
/* 省略された長いドメイン名をマウスオーバーで全部表示する。
* (複数行表示、折返せない場合はスクロールバー) */
#uBO-popup-panel .advancedUser #panes #firewallContainer > div.isDomain span:first-of-type:hover,
#uBO-popup-panel .advancedUser #panes #firewallContainer > div.isSubDomain span:first-of-type:hover {
overflow: auto !important;
white-space: normal !important;
}
#uBO-popup-panel .advancedUser #panes #firewallContainer > div.isDomain span:first-of-type,
#uBO-popup-panel .advancedUser #panes #firewallContainer > div.isSubDomain span:first-of-type {
height: auto !important;
line-height: 1.8 !important;
}
}